Board Thread:General Discussion/@comment-30365529-20170319014929/@comment-27248965-20170526142707

You can see a couple of rules from the Gyms we have:
 * 1) Gym Leader must be a Roblox game developer outside of the PBB Development Team.
 * 2) The Gym puzzle must be based on one of the featured developer's games.
 * 3) Following the tradition in core series, a TM belonging to the specialized type must be given once Gym Leader is defeated.

Hope that helps in narrowing down the hypothesis. Anyway, there were quite a few Normal-type Pokemon specialists in core series games (search on Bulbapedia yourself), though we just have a Dark-type Gym and it would be pretty dumb to have consecutive Gyms sharing a common weakness.

But to spice up the difficulty, I suppose that Champion will actually NOT have a specialized type...... We already have plenty of those: Green Oak, Master Red, Cynthia, Alder, Diantha and Prof. Kukui.